<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        let arr=[2,4,5,6,34,65];
        let max=arr[0];
        let min=arr[0];
        for(i=0;i<arr.length;i++){
            if(max<arr[i]){
            max=arr[i];
        }
            if(min>arr[i]){
                min=arr[i]
            }
        }
        document.write('数组最大值为'+max+'<br>')
        document.write('数组最小值为'+min)

    </script>
</body>
</html>